Hey Guys,
Thanks for the good words. Dom is the man! The whole thing is 41#. As, for the "round head bolt" they do not have nuts on the back. I believe that they are just pressed into pockets. But, I'll let Dom say for sure.
M&T, Thanks for the offer of the lead balls. I may take you up on a couple. I'll let you know. Also, could you PM me the price and details of the mold?